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OpenGL:Tutorials:Tutorial Framework:ParticlesIn this example, We're going to extend the principles used in the Ortho example to produce a nice particle effect. Setting Up Each particle has unique position, direction vector, color and a 'life' values. These values are contained by a structure: typedef struct { float xPos,yPos,zPos; float xVec,yVec,zVec; float r,g,b,life; }SpriteInfo;

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Rope PhysicsRope Simulation In this tutorial, you will find a simulation of a rope. This simulation is based on the simple physical simulation engine in Lesson 39. In order to benefit from this tutorial, you should know how forces are applied to masses in simulations, how position and velocity of a mass is iterated while the simulation runs, and how 3D vectoral operations are used in physics. If you hesitate on any one of those subjects, read about them from Lesson 39 and other sources, and develop several applications. In physical simulations, the purpose is to form a physical setting, which acts the same as in the natural environment.How I Can Afford My Life Of Constant TravelI’m confused. I’m simply confused as to how it’s possible that I have so far failed to properly explain how I’ve managed to travel/live/work abroad nonstop for 12 years straight (and counting). The questions are still pouring in every single day: How do you do it? How is it possible to travel for so long?

Power ShiftThe end of the Cold War has brought no mere adjustment among states but a novel redistribution of power among states, markets, and civil society. National governments are not simply losing autonomy in a globalizing economy. They are sharing powers -- including political, social, and security roles at the core of sovereignty -- with businesses, with international organizations, and with a multitude of citizens groups, known as nongovernmental organizations (NGOs). The steady concentration of power in the hands of states that began in 1648 with the Peace of Westphalia is over, at least for a while.-1 The absolutes of the Westphalian system -- territorially fixed states where everything of value lies within some state's borders; a single, secular authority governing each territory and representing it outside its borders; and no authority above states -- are all dissolving.

Some comments on OpenGL rendering of particlesWhen rendering particles in OpenGL there are many possible ways to represent them. The following goes through some of the possibilities with associated pseudo-code. At the very basic level it is possible to simply render the particles as points: glPointSize( 3.f ); glColor4f (1.0f,1.0f,1.0f,1.0f); glBegin(GL_POINTS); for(i=0; i<npoints; i+=nskip) { glVertex3f(x[i], y[i], z[i]); } // Done drawing points glEnd(); This produces a plot below: In the next level, it is possible to replace the points with "point sprites".Sample Western Europe Travel Itinerary - StumbleUponDublin->Glasgow->Edinburgh->Manchester->London->Amsterdam->Rotterdam->Brussels->Paris->Bordeaux->Zaragoza-> Madrid->Lisbon->Lagos->Sevilla->Malaga->Valencia->Barcelona->Toulouse->Marseille->Lyon->Geneva->Bern->Milan-> Genoa->Florence->Rome->Naples->Venice->Munich->Stuttgart->Frankfurt->Berlin->Hamburg->Copenhagen See it all with this itinerary. Start in Dublin and see the Emerald Isle before having Haggis in Scotland. Head down towards London and then over to Amsterdam.

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Simulating Particle Effects using OpenGLParticle Effect In this article I will demonstrate one possible way to implement a particle effect in C++ using OpenGL to render the effect. This demo uses the fixed function pipeline and the host processor (CPU) to perform the simulation. In this article, I will use OpenGL and GLUT to render graphics to the application window. If you do not know how to setup an application using OpengGL and GLUT you can refer to my previous article titled [Introduction to OpenGL for Game Programmers] available [here]. Particles systems have been used extensively in games for many years.

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